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| T P 1 7 |
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| V2.5 |
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| TP |
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| V 3 _ 3 |
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| V 5 _ 0 |
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| 1 |
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| U5 |
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| V2 . 5 |
| 2 | Out | In | 3 |
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| O u t T a b |
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| R15 |
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| C 1 6 2 |
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| C95 | 1 2 4 |
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| C94 |
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| C93 | C 1 6 5 | C 1 7 3 | C 1 6 9 | C 1 0 1 | C 1 7 1 | C 1 7 0 |
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| C 1 6 8 | C 1 6 4 | C 1 6 3 | 1% |
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| 0 . 1uF |
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| 1 0 0 u F |
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| 1 0 u F | 4 | ||||||||||
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| 4 7 u F | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF |
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| 0 . 01uF | 0 . 01uF | 0 . 01uF | 1 |
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| Adj/GND |
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| R16 | L T 1 17 |
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| 1 2 4 |
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| V 3 _ 3 |
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| 1% |
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| Note: R11 and R12 should be placed as |
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| close as possible to U1 |
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| R20 | 8 7 6 5 |
| 8 7 6 5 |
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| RP20 |
| RP22 |
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| 2 .7K | 1 0 K |
| 1 0 K |
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| Stuff only to enable |
| 1 2 3 4 |
| 1 2 3 4 |
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| U6 | 15 9 21 48 19 33 | 37 41 46 |
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| stopping of clocks |
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| VDDPCI | VDDPCI VDDUSB VDDREF AVDD AVDD | VDDCPU VDDCPU VDDAPIC | CPUCLK2 | 3 6 | CPUCLKR _ 2 | R29 | 3 3 |
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| CPUCLK2 | 4 |
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| CPUCLK0 | 4 0 | CPUCLKR _ 0 | R24 | 3 3 |
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| CPUCLK0 | 4 |
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| 3 9 | CPUCLKR _ 1 | R27 | 3 3 |
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| CPUCLK1 |
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| CPUCLK1 | 4 |
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| R35 | 0 |
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| 3 0 |
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| CPUCLK3 | 3 5 | CPUCLKR _ 3 | R31 | 3 3 |
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| CPUCLK3 |
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1 4 | CPU _ STOP# |
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| CPU _ STOP# |
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R33 | 0 |
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| 3 1 |
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| 7 | PCICLKF_R | R23 | 3 3 |
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| PCICLKF | 1 4 |
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1 4 | PCI _ STOP# | R37 | 0 |
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| 2 9 | PCI _ STOP# |
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| PCICLK_F | 8 | PCICLKR_1 | R26 | 3 3 |
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1 4 | SUSA# |
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| PWR _ DWN# |
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| PCI_CLK1 |
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| PCICLK1 | 1 0 |
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| 1 0 | PCICLKR_2 | R28 | 3 3 |
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| PCI_CLK2 |
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| PCICLK2 | 1 0 |
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| 1 1 | PCICLKR_3 | R30 | 3 3 |
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| PCI_CLK3 |
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| PCICLK3 | 1 1 |
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| 1 3 | PCICLKR_4 | R32 | 3 3 |
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| S E L 0 |
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| PCI_CLK4 |
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| PCICLK4 | 3 |
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| S E L 1 |
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| PCI_CLK5 | PCICLKR_6 | R34 | 3 3 |
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| 2 5 |
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| PCLKAPIC | 1 3 |
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| 7 | M A B # 1 2 _ R |
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| S E L 1 0 0 |
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| PCI_CLK6 |
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| 2 8 |
| CY2280 |
| 1 7 | PCICLKR_7 | R36 | 3 3 |
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| PCICLK7 | 4 |
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| SEL _ SS# |
| PCI_CLK7 |
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J15 | J14 |
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| USBCLK0 | 2 2 | USBCLKR _ 0 | R38 | 3 3 | USBCLK0 | 1 4 |
JUMP2 | HDR2 | 4 2 |
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RESERVED | USBCLK1 |
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2 | 2 |
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| REF0 | 1 | REFR _ 0 | R18 | 3 3 | REF0 | 1 8 |
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| 2 | REFR _ 1 | R21 | 3 3 | |||
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| REF1 | REF1 | 1 6 | ||||
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| 4 7 | REFR _ 2 | R17 | 3 3 | |||
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| 4 5 | APICCLKR_0 | R19 | 3 3 |
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| APIC0 | APICCLK0 | 1 3 | |||||
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| 4 4 | APICCLKR_1 | R22 | 3 3 | |||
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| APIC1 | APICCLK1 | 4 | ||||
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Keep | crystal close to cl ock and | Y1 |
| VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS | |
caps | close to crystal. | All lead | 2 | ||
lengths should be equal. |
| 1 | 14 . 318MHz | ||
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| 3 6 12 18 20 24 32 34 38 43 |
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| C99 | C 1 0 0 |
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| 10pf | 10pf |
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| This circuit is only used for |
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| TX/Pentium Designs. | Note only |
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| two DIMMS are supported. |
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This circuit is only used for |
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| V 3 _ 3 |
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BX/PentiumII Designs. Note |
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three DIMMS are supported. |
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| C 2 1 3 | C 2 1 7 | C 2 2 3 | C 2 2 1 | C 2 1 2 | C 2 2 5 | C 2 2 0 | C 2 2 4 | C 2 2 2 | C 2 1 6 | C 2 1 1 | C 1 5 0 | C 1 4 9 | C 1 4 8 |
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| 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 0 . 01uF | 1 5 u F | 1 5 u F | 1 5 u F |
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| These caps can be tuned to | |
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| U16 | 3 7 12 16 20 23 29 33 37 42 46 |
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| change delay through buffer. | |||
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| VDD | VDD VDD VDD VDD VDD VDD VDD VDD VDD VDD |
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| SDRAM0 | 4 | SDCLKR0 |
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| SDCLK0 | 5 |
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| 5 | SDCLKR1 |
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| C 2 1 4 | C 2 0 9 | |||
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| 8 | SDCLKR2 |
| R 1 1 4 | 0 |
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| 1 0 p F | 1 0 p F | |||
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| R 1 1 6 | 0 |
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4 | BXDCLKO | CLK_IN |
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| CPUCLK3 | 1 |
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| SDRAM4 |
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| Ref | CLKOUT |
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| CONFIG1 | 3 8 |
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| 1 4 | SDCLKR9 |
| R 1 2 1 | 0 |
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| SDCLKR5 | 2 | 1 5 | SDCLKR0 | |||||
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| CLKA1 | CLKA4 | ||||||||||
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| SDCLKR4 | 3 | 1 4 | SDCLKR1 | ||||||
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| CLKA2 | CLKA3 | |||||
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| 4 | 1 3 |
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| SDRAM7 |
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| VDD | VDD |
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| CY2318NZ | 3 1 |
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| 5 | 1 2 |
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| SDRAM8 |
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| SDCLKR6 | GND | GND | SDCLKR2 | ||||
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| 6 | 1 1 | ||||||
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| SDRAM9 | 3 5 | SDCLKR10 |
| R 1 2 0 | 0 |
| SDCLK10 | 7 |
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| SDCLKR7 | 7 | CLKB1 | CLKB4 | 1 0 | SDCLKR3 |
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| CLKB2 | CLKB3 | |||||||||||
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| 3 6 | SDCLKR11 |
| R 1 1 8 | 0 |
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| 8 | 9 |
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| 4 0 | SDCLKR7 |
| R 1 1 5 | 0 |
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| SDCLK7 | 6 |
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| R 1 1 3 | 0 |
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| 4 4 | SDCLKR4 |
| R 1 1 1 | 0 |
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| 4 5 | SDCLKR5 |
| R 1 0 9 | 0 |
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4,5,6,7,9,14 | S M B D A T A | 2 4 | S D A T A |
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| 4,14 CONFIG1 |
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2 5 |
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4,5,6,7,9,14 | SMBCLK | SCLK |
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| VSS | VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS |
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| 74HCT14 |
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| 1 | |||
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| 6 10 15 19 22 26 27 30 34 39 43 |
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| THIS DRAWING CONTAINS INFORMATION WHICH HAS NOT |
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| BEEN VERIFIED FOR MANUFACTURING AS AN ENDUSER Title |
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| PRODUCT. | INTEL IS NOT RESPONSIBLE FORTHE |
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| MISUSE OF THIS INFORMATIO. | Size | Document Number | Rev | |||
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| C | {Doc} | D | ||||
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| Date: | Thursday, February 25, 1999 | Sheet 8 of 2 2 |
A | B | C |
| D |
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| E |
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